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SMA S137.7-US Inverter with Hyundai HIS-S290RG Modules 8.99 kW DC Photovoltaic System Electrical Diagram with (3) Series Strings 1-11, 2-10 5 6 7 8 9 Optional Supply Side Connection NEC 705.12A To i—de , szso U--�Modules 1)Hyundai HiS-S290RG in series Lt 6 n N O . #6 bare copper GEC (3l#6 U."t" THHNrtHNM-2 200A 5290- 314"avc conduit RG #10 60 A fused dis connectwith - Hyundai HiS-S290RG 40A fuses existing Main Distribution grounding Panel U Module Specifications SMA SB7.7-US Inverter Pmax: 290 Wp Max.Input DC Voltage:600 VDC szso (10)Hyundai Max ISC per string: 18 A RG #10 HiS-S290RG Voc: 38.8 V 200A Panelboard with Vm 32.0 V MPPT Range: 100-550 VDC Modules in series pp' Max Output Voltage: 240 VAC 200 A Main breaker Isc: 9.7 A O 6)#10 AWG PV Wire 3-R,3-B (1)#6 AWG Bare Copper Im pp: 9.1 A Max Output current: 32A(AC)— 3 zooA-z .C.Voltage:-0.30%Ili AC Nominal Power:7680 Watts O (6)#10 AWG THHN/THWN-2 Notes: All work to meet or exceed NEC 2011 OO 3-B,3-11 OJunction box to be located within the array boundary. Junction box must be minimum Nema 311 UL listed 10 (1)#8 AWG THHN/THWN-2 enclosure.Free air conductors must be installed in raceway if readily accessible as per 690.31(A). Nema 3R 1-G sDhe minimum volume of the Nema 3R enclosure for the transition of PV wire to THWN-2 wire shall be 11 40Al2 Junction 3/4"EMT,FMC(inside structure 48 cubic inches. Heyco 5 wire Masthead gland seals or similar connector are required as strain relief I Box LFNC,PVC(outside structure) for PV wire into Nema 311 junction box at array. i 690.31E Olnterconnection with 40 Amp 2 pole OCPD via 2011 NEC 705.12(D)(2)Load Side Connection. The 40 A i backfed breaker must be located at the opposite end of the bus from the 200 A main supply breaker SMA Sunny Boy 7.7-US OThe required PV Backfed breaker plus the main breaker rating must be less than or.equal to 120%of i a Transformerless Inverter with the Main service bus rating. 705.12(D)(2) arourtg g Optional Supply Side connection via 705.12A using parallel line taps in a NEMA 3R box(as required) ' gristing g p� integrated DC disconnect •• electrode F(4)#8 AWG THHNITHWN-2 using NSI IPCS4002, Ilsco IPC-KUP-L or NSI Tork IPLD 3/0-3 Multi-Tap Connector or equivalent. OPV service disconnecting means for"optional"supply side connection must have neutral/EGC bond 1-B,1-R,1-W,1-G within and must be listed as"suitable for use as service equipment." 230.66 i 3/4"i EMT,FMC,LFNC,i OThe fuses in the disconnect for the"supply side"option must be rated to handle the maximum short- or PVC circuit current available at the supply terminals.110.9,110.10 Over-current protection for the supply side �•— —•—•—•—• connected conductors shall be located within 10 feet of the connection to the service. 705.31 0Grounded conductor shall be routed with ungrounded conductors to PV Service disconnecting means as (4)#8 AWG THHN/THWN-2 per 250.24(C)if"Supply Side"option is used. 1-B,1-R,1-W,1-G sO For"Supply Side option" Continuous or irreversibly spliced Grounding Electrode Conductor installed 3/4"EMT,FMC,LFNC,or PVC per 250.24(D). Grounding Electrode Conductor shall be specified as per 250.64 and sized per 250.66 10 The following label is required on meter can and main panelboard"Services fed from dual power sources Utility and Photovoltaic system" If required by Utility 71 "PV input Do not relocate this OCPD"label required adjacent to backfed breaker. 705.12(d)(7) 60A 240V AC Disconnect with label On-site Utility Generation 13 12 onding of module to rail and module to module accomplished through WEEB washers or self grounding Disconnect Switch DC Disconnect Label Requirements mid-clamps. Vmpp 352 vdC 13 "Warning:DC conductors of this system are ungrounded and may be energized"required on the max 459 VdC DC Disconnect 690.35F PV AC Disconnect Label Requirements 14."Warning:Photovoltaic Power Source"label required on conduit per 690.31(E)(3)(4) Operating Current:32 A Impp 27.3 A 15. Total voltage drop%for all circuits based on listed conductors is 1.64a/o Operating Voltage: 240 VAC Imax 36.37 A 16. Fuses are required on positve and negative conductors of systems with 3 or more strings(source circuits).